117 lines
2.8 KiB
Go
117 lines
2.8 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"strconv"
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messages "git.tornberg.me/go-cart-actor/proto"
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)
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type PoolServer struct {
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pod_name string
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pool GrainPool
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}
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func NewPoolServer(pool GrainPool, pod_name string) *PoolServer {
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return &PoolServer{
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pod_name: pod_name,
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pool: pool,
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}
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}
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func (s *PoolServer) HandleGet(w http.ResponseWriter, r *http.Request) error {
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id := r.PathValue("id")
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data, err := s.pool.Get(ToCartId(id))
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if err != nil {
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return err
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}
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return s.WriteResult(w, data)
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}
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func (s *PoolServer) HandleAddSku(w http.ResponseWriter, r *http.Request) error {
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id := r.PathValue("id")
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sku := r.PathValue("sku")
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data, err := s.pool.Process(ToCartId(id), Message{
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Type: AddRequestType,
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Content: &messages.AddRequest{Sku: sku},
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})
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if err != nil {
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return err
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}
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return s.WriteResult(w, data)
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}
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func ErrorHandler(fn func(w http.ResponseWriter, r *http.Request) error) func(w http.ResponseWriter, r *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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err := fn(w, r)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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w.Write([]byte(err.Error()))
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}
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}
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}
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func (s *PoolServer) WriteResult(w http.ResponseWriter, data []byte) error {
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w.Header().Set("Content-Type", "application/json")
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w.Header().Set("X-Pod-Name", s.pod_name)
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w.WriteHeader(http.StatusOK)
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_, err := w.Write(data)
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return err
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}
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func (s *PoolServer) HandleDeleteItem(w http.ResponseWriter, r *http.Request) error {
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id := r.PathValue("id")
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itemIdString := r.PathValue("itemId")
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itemId, err := strconv.Atoi(itemIdString)
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if err != nil {
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return err
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}
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data, err := s.pool.Process(ToCartId(id), Message{
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Type: RemoveItemType,
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Content: &messages.RemoveItem{Id: int64(itemId)},
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})
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if err != nil {
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return err
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}
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return s.WriteResult(w, data)
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}
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type SetDelivery struct {
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Provider string `json:"provider"`
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Items []int64 `json:"items"`
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}
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func (s *PoolServer) HandleSetDelivery(w http.ResponseWriter, r *http.Request) error {
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id := r.PathValue("id")
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var delivery *SetDelivery
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err := json.NewDecoder(r.Body).Decode(delivery)
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if err != nil {
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return err
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}
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if delivery == nil {
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return fmt.Errorf("no delivery data")
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}
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data, err := s.pool.Process(ToCartId(id), Message{
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Type: SetDeliveryType,
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Content: &messages.SetDelivery{
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Provider: delivery.Provider,
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Items: delivery.Items,
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},
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})
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if err != nil {
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return err
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}
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return s.WriteResult(w, data)
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}
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func (s *PoolServer) Serve() *http.ServeMux {
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mux := http.NewServeMux()
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mux.HandleFunc("GET /{id}", ErrorHandler(s.HandleGet))
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mux.HandleFunc("GET /{id}/add/{sku}", ErrorHandler(s.HandleAddSku))
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mux.HandleFunc("DELETE /{id}/{itemId}", ErrorHandler(s.HandleDeleteItem))
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mux.HandleFunc("POST /{id}/delivery", ErrorHandler(s.HandleSetDelivery))
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return mux
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}
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